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libbpf: Deprecate priv/set_priv storage 

Arbitrary storage via bpf_*__set_priv/__priv is being deprecated
without a replacement ([1]). perf uses this capability, but most of
that is going away with the removal of prologue generation ([2]).
perf is already suppressing deprecation warnings, so the remaining
cleanup will happen separately.

  [1]: Closes: https://github.com/libbpf/libbpf/issues/294
  [2]: https://lore.kernel.org/bpf/20220123221932.537060-1-jolsa@kernel.org/

Signed-off-by: Delyan Kratunov <delyank@fb.com>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20220203180032.1921580-1-delyank@fb.com
This commit is contained in:
Delyan Kratunov 2022-02-03 10:00:32 -08:00 committed by Andrii Nakryiko
parent a676308085
commit ca33aa4ec5
1 changed files with 6 additions and 1 deletions
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7
tools/lib/bpf/libbpf.h
View File

@ -246,8 +246,10 @@ struct bpf_object *bpf_object__next(struct bpf_object *prev);
(pos) = (tmp), (tmp) = bpf_object__next(tmp))
typedef void (*bpf_object_clear_priv_t)(struct bpf_object *, void *);
LIBBPF_DEPRECATED_SINCE(0, 7, "storage via set_priv/priv is deprecated")
LIBBPF_API int bpf_object__set_priv(struct bpf_object *obj, void *priv,
bpf_object_clear_priv_t clear_priv);
LIBBPF_DEPRECATED_SINCE(0, 7, "storage via set_priv/priv is deprecated")
LIBBPF_API void *bpf_object__priv(const struct bpf_object *prog);
LIBBPF_API int
@ -279,9 +281,10 @@ bpf_object__prev_program(const struct bpf_object *obj, struct bpf_program *prog)
typedef void (*bpf_program_clear_priv_t)(struct bpf_program *, void *);
LIBBPF_DEPRECATED_SINCE(0, 7, "storage via set_priv/priv is deprecated")
LIBBPF_API int bpf_program__set_priv(struct bpf_program *prog, void *priv,
bpf_program_clear_priv_t clear_priv);
LIBBPF_DEPRECATED_SINCE(0, 7, "storage via set_priv/priv is deprecated")
LIBBPF_API void *bpf_program__priv(const struct bpf_program *prog);
LIBBPF_API void bpf_program__set_ifindex(struct bpf_program *prog,
__u32 ifindex);
@ -769,8 +772,10 @@ LIBBPF_API __u64 bpf_map__map_extra(const struct bpf_map *map);
LIBBPF_API int bpf_map__set_map_extra(struct bpf_map *map, __u64 map_extra);
typedef void (*bpf_map_clear_priv_t)(struct bpf_map *, void *);
LIBBPF_DEPRECATED_SINCE(0, 7, "storage via set_priv/priv is deprecated")
LIBBPF_API int bpf_map__set_priv(struct bpf_map *map, void *priv,
bpf_map_clear_priv_t clear_priv);
LIBBPF_DEPRECATED_SINCE(0, 7, "storage via set_priv/priv is deprecated")
LIBBPF_API void *bpf_map__priv(const struct bpf_map *map);
LIBBPF_API int bpf_map__set_initial_value(struct bpf_map *map,
const void *data, size_t size);